Trustworthy, encrypted, command-line TOTP/HOTP authenticator app with import functionality.

Time-Based One-Time Password (TOTP) and HMAC-Based One-Time Password (HOTP) library for Go.

web service and api with free phone numbers from various providers in one place

Generate TOTP secrets and codes to use while making and testing software secured by TOTP MFA/2FA.

C++11 HMAC (SHA1/SHA256/SHA512) library with PBKDF2/HKDF, HOTP/TOTP + stateless time tokens, Base32/64/36, zeroizing secure_buffer, CMake package and MQL5 support.

A TOTP code generator for the CLI that securely stores secrets in the keychain

Local TOTP Generator is an offline tool for generating time-based one-time passwords (TOTPs) using the Web Crypto API. With customizable settings for digit length, period, and algorithm, it's perfect for secure 2FA testing, temporary access setups, and quick authentications without compromising your secret key.

jCat One Time Password Manager

Minimal Free Pascal implementation of TOTP and HOTP algorithms using SHA1 and SHA256. Supports both time-based and counter-based OTP generation.

Python script to dump 2fa pin from Android FreeOTPPlus (FreeOTP+) export file freeotp-backup.json

OTPLib Delphi Library

A time-base one time password generator for Mac (TOTP)

Command line Google Authenticator alternative. Or, Command line Script for managing 2FAs.

🔑 Command-line tool for managing Time-based One-Time Passwords (TOTPs).

Debugging tool for time-based one-time password (TOTP).

FLink TOTP a generator of Family link codes using TOTP generation.

Cross-platform desktop application for generating TOTP codes

Web-App to share TOTP with a group of people.

Get TOTP Codes from Ente Auth using Raycast

Operation system for boards. The Operating System allows you to use the board as a security key.

Time based OTP (TOTP) generation for 2-factor authentication like Google Authenticator without backend

Alternative security options

A secure, client-side Time-based One-Time Password (TOTP) generator built with Next.js, Tailwind CSS, and a premium Glassmorphism design

A lightweight, zero-dependency Node.js library for generating and verifying Time-Based One-Time Passwords (TOTP) and HMAC-Based One-Time Passwords (HOTP), compliant with RFC 6238 and RFC 4226.

A browser based TOTP client.

Implementation of HOTP and TOTP as per the RFC RFC4226 and RFC6238 respectively

Automated Telegram message listener with macOS Shortcuts integration

JS/HTML UI widget for entering OTP tokens of varying length (e.g. TOTP, SMS), auto-progression, fires custom event etc. Plain javascript.

hash and encryption library to manage configuration complexity

Two factor authentication desktop client (JavaFX-based)